for starters I'd combine "post_table" and "post_text_table" into one....not much is accomplished there by having two tables. Also make sure forum_post.topic_id is indexed.
On Jun 5, 2008, at 1:37 PM, beewee wrote: > > Hi, > > we're writing a bulleting board using sqlalchemy at the moment, but we > have the problem, that the database query for viewing a topic is quite > slow for big topics. > These are the relevant table definitions and mappings: > http://paste.pocoo.org/show/62703/ > This is the query that is slow: http://paste.pocoo.org/show/62706/ > This is what EXPLAIN says: http://paste.pocoo.org/show/62708/ > Executing this query needs up to 25 seconds on our test server that's > just idling. On our productive servers (which aren't idling, of > course) phpbb is able to execute an adequate query much faster. May > you can help us speeding up this query? I don't know what to improve, > since all parts of the query already use a key (except the derived > one), but unfortunately I have a quite small knowledge of improving > database queries. > > Thank you very much, > > Benjamin Wiegand > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
